[Laboratory-based surveillance of influenza virus in Japan in the winter of 1980-1981 (author's transl)].
D000293:Adolescent; D000328:Adult; D000914:Antibodies, Viral / Q000032:analysis; D004196:Disease Outbreaks / Q000453:epidemiology*; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology*; D007564:Japan; D009975:Orthomyxoviridae / Q000276:immunology
D000914:Antibodies, Viral